students = [
    ['林青霞', '狄龙', '郑少秋'],
    ['张曼玉', '梁朝伟'],
    ["柯南", "多啦A梦", "鸣人", "亚索"]
]
print(students[0][1])
print(students[2][2])
students[2][1] = "机器猫"
print(students)

arr = range(2, 5)
print(list(arr))
